package exam7;

/**
 * @author HB
 * @version 1.0
 * @description
 * @date 2021/6/25
 */
public class TV{
    public void on(){
        System.out.println("电视机打开！");
    }

    public void off(){
        System.out.println("电视机关闭！");
    }
}
